<template>
  <div>
    <h2>随机点名</h2>
    <div class="box">
      <span>名字是：</span>
      <div v-cloak class="qs">{{qs}}</div>
    </div>
    <div class="btns">
      <button class="start" @click="start" :disabled="flag">开始</button>
      <button class="end" @click="end">结束</button>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      qs: "武松",
      array: [
        "武松",
        "宋江",
        "李逵",
        "卢俊义",
        "林冲",
        "柴进",
        "吴用",
        "关胜",
        "公孙胜",
        "秦明",
        "呼延灼",
      ],
      timeA: "",
      flag: false,
    };
  },
  methods: {
    start() {
      this.timeA = setInterval(() => {
        this.qs = this.array[parseInt(Math.random() * this.array.length)];
        this.flag = true;
      }, 100);
    },
    end() {
      clearTimeout(this.timeA);
      this.flag = false;
    },
  },
};
</script>

<style>
* {
  margin: 0;
  padding: 0;
}

h2 {
  text-align: center;
}

.box {
  width: 600px;
  margin: 50px auto;
  display: flex;
  font-size: 25px;
  line-height: 40px;
}

.qs {
  width: 450px;
  height: 40px;
  color: red;
}

.btns {
  text-align: center;
}

.btns button {
  width: 120px;
  height: 35px;
  margin: 0 50px;
}
</style>